package com.ruoyi.generator.controller;

import java.io.IOException;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletResponse;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.util.StringUtil;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.uuid.IdUtils;
import com.ruoyi.generator.controller.param.FormDataParam;
import com.ruoyi.generator.domain.FormBase;
import com.ruoyi.generator.domain.FormField;
import com.ruoyi.generator.mapper.FormBaseMapper;
import com.ruoyi.generator.mapper.FormFieldMapper;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.ruoyi.common.annotation.Log;
import com.ruoyi.common.core.controller.BaseController;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.core.page.TableDataInfo;
import com.ruoyi.common.core.text.Convert;
import com.ruoyi.common.enums.BusinessType;
import com.ruoyi.generator.domain.GenTable;
import com.ruoyi.generator.domain.GenTableColumn;
import com.ruoyi.generator.service.IGenTableColumnService;
import com.ruoyi.generator.service.IGenTableService;

/**
 * 代码生成 操作处理
 *
 * @author ruoyi
 */
@RestController
@RequestMapping("/tool/gen")
public class GenController extends BaseController
{
    @Autowired
    private IGenTableService genTableService;

    @Autowired
    private IGenTableColumnService genTableColumnService;

    @Autowired
    private FormBaseMapper formBaseMapper;

    @Autowired
    private FormFieldMapper formFieldMapper;

    /**
     * 查询代码生成列表
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:list')")
    @GetMapping("/list")
    public TableDataInfo genList(GenTable genTable)
    {
        startPage();
        List<GenTable> list = genTableService.selectGenTableList(genTable);
        return getDataTable(list);
    }

    /**
     * 修改代码生成业务
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:query')")
    @GetMapping(value = "/{talbleId}")
    public AjaxResult getInfo(@PathVariable Long talbleId)
    {
        GenTable table = genTableService.selectGenTableById(talbleId);
        List<GenTable> tables = genTableService.selectGenTableAll();
        List<GenTableColumn> list = genTableColumnService.selectGenTableColumnListByTableId(talbleId);
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("info", table);
        map.put("rows", list);
        map.put("tables", tables);
        return AjaxResult.success(map);
    }

    /**
     * 查询数据库列表
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:list')")
    @GetMapping("/db/list")
    public TableDataInfo dataList(GenTable genTable)
    {
        startPage();
        List<GenTable> list = genTableService.selectDbTableList(genTable);
        return getDataTable(list);
    }

    /**
     * 查询数据表字段列表
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:list')")
    @GetMapping(value = "/column/{talbleId}")
    public TableDataInfo columnList(Long tableId)
    {
        TableDataInfo dataInfo = new TableDataInfo();
        List<GenTableColumn> list = genTableColumnService.selectGenTableColumnListByTableId(tableId);
        dataInfo.setRows(list);
        dataInfo.setTotal(list.size());
        return dataInfo;
    }

    /**
     * 导入表结构（保存）
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:import')")
    @Log(title = "代码生成", businessType = BusinessType.IMPORT)
    @PostMapping("/importTable")
    public AjaxResult importTableSave(String tables)
    {
        String[] tableNames = Convert.toStrArray(tables);
        // 查询表信息
        List<GenTable> tableList = genTableService.selectDbTableListByNames(tableNames);
        genTableService.importGenTable(tableList);
        return AjaxResult.success();
    }

    /**
     * 修改保存代码生成业务
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:edit')")
    @Log(title = "代码生成", businessType = BusinessType.UPDATE)
    @PutMapping
    public AjaxResult editSave(@Validated @RequestBody GenTable genTable)
    {
        genTableService.validateEdit(genTable);
        genTableService.updateGenTable(genTable);
        return AjaxResult.success();
    }

    /**
     * 删除代码生成
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:remove')")
    @Log(title = "代码生成", businessType = BusinessType.DELETE)
    @DeleteMapping("/{tableIds}")
    public AjaxResult remove(@PathVariable Long[] tableIds)
    {
        genTableService.deleteGenTableByIds(tableIds);
        return AjaxResult.success();
    }

    /**
     * 预览代码
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:preview')")
    @GetMapping("/preview/{tableId}")
    public AjaxResult preview(@PathVariable("tableId") Long tableId) throws IOException
    {
        Map<String, String> dataMap = genTableService.previewCode(tableId);
        return AjaxResult.success(dataMap);
    }

    /**
     * 生成代码（下载方式）
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:code')")
    @Log(title = "代码生成", businessType = BusinessType.GENCODE)
    @GetMapping("/download/{tableName}")
    public void download(HttpServletResponse response, @PathVariable("tableName") String tableName) throws IOException
    {
        byte[] data = genTableService.downloadCode(tableName);
        genCode(response, data);
    }

    /**
     * 生成代码（自定义路径）
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:code')")
    @Log(title = "代码生成", businessType = BusinessType.GENCODE)
    @GetMapping("/genCode/{tableName}")
    public AjaxResult genCode(@PathVariable("tableName") String tableName)
    {
        genTableService.generatorCode(tableName);
        return AjaxResult.success();
    }

    /**
     * 同步数据库
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:edit')")
    @Log(title = "代码生成", businessType = BusinessType.UPDATE)
    @GetMapping("/synchDb/{tableName}")
    public AjaxResult synchDb(@PathVariable("tableName") String tableName)
    {
        genTableService.synchDb(tableName);
        return AjaxResult.success();
    }

    /**
     * 批量生成代码
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:code')")
    @Log(title = "代码生成", businessType = BusinessType.GENCODE)
    @GetMapping("/batchGenCode")
    public void batchGenCode(HttpServletResponse response, String tables) throws IOException
    {
        String[] tableNames = Convert.toStrArray(tables);
        byte[] data = genTableService.downloadCode(tableNames);
        genCode(response, data);
    }

    /**
     * 生成zip文件
     */
    private void genCode(HttpServletResponse response, byte[] data) throws IOException
    {
        response.reset();
        response.addHeader("Access-Control-Allow-Origin", "*");
        response.addHeader("Access-Control-Expose-Headers", "Content-Disposition");
        response.setHeader("Content-Disposition", "attachment; filename=\"ruoyi.zip\"");
        response.addHeader("Content-Length", "" + data.length);
        response.setContentType("application/octet-stream; charset=UTF-8");
        IOUtils.write(data, response.getOutputStream());
    }


    /**
     * 批量生成代码
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:code')")
    @Log(title = "保存表单", businessType = BusinessType.GENCODE)
    @PostMapping("/saveForm")
    @Transactional
    public AjaxResult saveForm(@Validated @RequestBody FormDataParam param) throws IOException
    {
        //JSONObject jsonObject1 = JSONObject.parseObject(param.getFieldList());
        JSONObject formConfig = JSONObject.parseObject(param.getFormConfig());

        if (formConfig != null) {
            String tableName = formConfig.getString("formRef");
            String simpleUUID = IdUtils.simpleUUID();
            FormBase formBase = new FormBase();
            formBase.setFormDbName(tableName);
            formBase.setJsonUrl(formConfig.toJSONString());
            formBase.setUuid(simpleUUID);
            formBaseMapper.insertFormBase(formBase);
            //String tableName = formConfig.getString("formRef");
            JSONArray jsonArray = JSONObject.parseArray(param.getFieldList());
            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.append("CREATE TABLE " + tableName + "(");
            stringBuilder.append("  id INT NOT NULL AUTO_INCREMENT COMMENT ' 主键自增 ',");
            int seqNo = 0;
            for (Object json : jsonArray) {
                JSONObject jsonObject = JSONObject.parseObject(json.toString());
                System.out.println("JSON:"+jsonObject.toJSONString());
                String vModel = jsonObject.getString("vModel"); //字段名
                String label = jsonObject.getString("label");   //中文名
                String tagIcon = jsonObject.getString("tagIcon");   //类型
                String defaultValue = jsonObject.getString("defaultValue"); //默认值
                String precision = jsonObject.getString("precision");   //小数点精度
                String maxlength = jsonObject.getString("maxlength");   //最大长度
                String required = jsonObject.getString("required");   //必填
                String fieldType = "";
                if("number".equals(tagIcon)){
                    if(StringUtil.isNotEmpty(precision) && Convert.toInt(precision) >0){
                        fieldType = "NUMERIC("+Convert.toInt(precision)+2+","+precision+")";
                    }else{
                        fieldType = "INT";
                    }
                }else if("time".equals(tagIcon) || "time-range".equals(tagIcon)|| "date".equals(tagIcon)|| "date-range".equals(tagIcon)){
                    fieldType = "DATETIME";
                }else{
                    if("el-upload".equals(tagIcon) || "textarea".equals(tagIcon)){
                        if(StringUtil.isEmpty(maxlength)){
                            maxlength = "2000";
                        }
                    }
                    if(StringUtil.isEmpty(maxlength)){
                        maxlength = "128";
                    }
                    fieldType = "VARCHAR("+maxlength+")";
                }

                stringBuilder.append("  " + vModel + " " + fieldType);
                if(StringUtil.isNotEmpty(defaultValue)){
                    //stringBuilder.append(" DEFAULT " + defaultValue);
                }
                if(StringUtil.isEmpty(required) && "true".equals(required)){
                    stringBuilder.append(" NOT NULL");
                }
                stringBuilder.append(" COMMENT '"+label+"'");
                stringBuilder.append(",");

                FormField formField = new FormField();
                formField.setFieldDbName(vModel);
                formField.setFieldDbType(fieldType);
                formField.setFieldName(label);
                formField.setFieldLength(Convert.toLong(maxlength));
                formField.setFieldType(tagIcon);
                formField.setFieldJson(json.toString());
                formField.setRequired(Convert.toInt(required));
                formField.setFieldPrecision(Convert.toLong(precision));
                formField.setSeqNo((long) seqNo++);
                formField.setFormId(formBase.getId());
                formFieldMapper.insertFormField(formField);
            }
            stringBuilder.append("  PRIMARY KEY (id) ");
            stringBuilder.append("); ");
            System.out.println(stringBuilder.toString());

            formBase.setDml(stringBuilder.toString());
            formBaseMapper.updateFormBase(formBase);
            formBaseMapper.createTable(stringBuilder.toString());
        }
        return AjaxResult.success();
    }

    //解码
    public static String unicodetoString(String unicode) {
        if (unicode == null || "".equals(unicode)) {
            return null;
        }
        StringBuilder sb = new StringBuilder();
        int i = -1;
        int pos = 0;
        while ((i = unicode.indexOf("\\u", pos)) != -1) {
            sb.append(unicode.substring(pos, i));
            if (i + 5 < unicode.length()) {
                pos = i + 6;
                sb.append((char) Integer.parseInt(unicode.substring(i + 2, i + 6), 16));
            }
        }
        return sb.toString();
    }
}
